You might not agree, but the popular dichotomous method of choosing a scent typically used in stores (“Which do you prefer, fresh or sweet”? ) Doesn't work. The list of surface notes is also mostly smoke and mirrors: it's not that important what a perfume is made of, the much more important thing is how it was made. Refer your designer if he thinks people are looking at the top right corner of an object first - people are looking where something interesting is going on.